Large-pipe-diameter pipe jacking and dragging trolley device

Abstract

The utility model belongs to the field of municipal engineering, and particularly relates to a large-pipe-diameter pipe jacking and dragging trolley device which comprises an upper arc-shaped hoop and a lower arc-shaped hoop which are symmetrically arranged, connecting pieces are outwards arranged on the left side and the right side of the upper arc-shaped hoop and the left side and the right side of the lower arc-shaped hoop respectively, connecting holes are formed in the connecting pieces, and long screw rods penetrate through the connecting holes upwards. The long screw rod is fixed through a nut; and a plurality of rollers are uniformly mounted on the outer surface of the lower arc-shaped hoop in the arc-shaped direction. Compared with a traditional pipe dragging device, the device has higher bearing capacity, the heat distribution pipeline is prevented from making direct contact with the inner wall of a sleeve, the device can adapt to pipe pulling construction in the pipe jacking process of the large-pipe-diameter heat distribution pipeline, higher stability is achieved, the three rows of rollers prevent the trolley from rotating in the pipe dragging process, higher straight and smooth precision is guaranteed, and the construction efficiency is improved. And the workload of the pipe dragging device is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of municipal engineering, and in particular relates to a large-diameter pipe jacking and pipe dragging trolley device. Background Art

[0002] During the construction of large-diameter thermal pipelines, it is often necessary to carry out underground pipe jacking construction, push the casing in, and finally drag the thermal pipeline inside the casing to complete the connection of the entire thermal pipeline line.

[0003] A single-wheel fixed-device trolley is commonly used to support pipe dragging. However, for large-diameter thermal pipelines, the supporting force of a single wheel is insufficient, and the trolley often rotates during the pipe dragging process, causing the thermal pipeline to directly contact the inner wall of the casing. This not only causes damage to the outer insulation layer of the thermal pipeline during the pipe dragging process, but also increases the pulling force required for pipe dragging, greatly increasing the workload of the pipe dragging device. Summary of the invention

[0004] The problem to be solved by the present invention is to overcome the shortcomings of the background technology and provide a large-diameter pipe jacking and pipe dragging trolley device.

[0005] The present invention is achieved through the following technical solutions:

[0006] A large-diameter pipe jacking and pipe dragging trolley device comprises an upper arc-shaped clamp and a lower arc-shaped clamp symmetrically arranged, wherein the upper arc-shaped clamp and the lower arc-shaped clamp are both provided with connecting plates outwardly on the left and right sides, and the connecting plates are provided with connecting holes, and a long screw rod passes upward through the connecting hole, and the long screw rod is fixed by a nut; a plurality of rollers are evenly installed on the outer surface of the lower arc-shaped clamp along the arc direction.

[0007] Preferably, the connecting piece is provided with a reinforcing rib.

[0008] Preferably, three rollers are provided, and the middle roller is located at the bottom end of the lower arc-shaped clamp.

[0009] Preferably, the width of the upper arc-shaped clamp and the lower arc-shaped clamp is 10-20 cm.

[0010] Preferably, the roller is a bearing type roller.

[0011] Preferably, two long screws are provided on each side.

[0012] Preferably, a rubber cushion layer is provided on the inner surfaces of the upper arc-shaped clamp and the lower arc-shaped clamp.

[0013] Compared with the prior art, the present invention has the following main advantages:

[0014] 1. It has a greater bearing capacity, prevents the thermal pipe from directly contacting the inner wall of the casing, and can adapt to the pipe pulling construction in the jacking of large-diameter thermal pipes.

[0015] 2. It has higher stability, preventing the trolley from rotating during the pipe dragging process and losing the guiding function of the trolley, thus ensuring higher straightness accuracy.

[0016] 3. The three rows of rollers greatly reduce the friction resistance during the pipe dragging process and greatly reduce the workload of the pipe dragging device.

[0017] 4. The external fixing structure with upper and lower layered installation and double-row long screws that can be adjusted enables the device to be adjusted according to different pipe diameters, thus improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the thermal pipeline after the device is installed in this embodiment;

[0019] Figure 2 This is a schematic diagram of the structure of the pipe dragging state of this embodiment;

[0020] Figure 3 This is a schematic diagram of the front view structure of this embodiment;

[0021] Figure 4 This is a schematic diagram of the split structure of this embodiment.

[0022] In the figure, 1 is an upper arc clamp, 2 is a lower arc clamp, 3 is a connecting plate, 4 is a connecting hole, 5 is a long screw, 6 is a nut, 7 is a roller, 8 is a reinforcing rib, 9 is a casing, and 10 is a thermal pipe. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0024] This embodiment includes an upper arc clamp 1 and a lower arc clamp 2 symmetrically arranged in the upper and lower parts, and the upper arc clamp 1 and the lower arc clamp 2 are used to clamp the thermal pipe 10 to be dragged. The external fixing structure of the thermal pipe 10 is divided into an upper arc clamp 1 and a lower arc clamp 2 layered in the upper and lower parts, so that the device can be applied to thermal pipes 10 of different diameters. Preferably, the width of the upper arc clamp 1 and the lower arc clamp 2 is between 10-20 cm, and the upper arc clamp 1 and the lower arc clamp 2 can be made of arc steel plates. In order to prevent the upper arc clamp 1 and the lower arc clamp 2 from damaging the outer insulation layer of the thermal pipe 10, preferably, a rubber cushion layer is provided on the inner surface of the upper arc clamp 1 and the lower arc clamp 2. The upper arc-shaped clamp 1 and the lower arc-shaped clamp 2 are provided with connecting pieces 3 on the left and right sides, and the connecting pieces 3 are provided with connecting holes 4. Long screws 5 are passed upward through the upper and lower connecting holes 4 on the same side, and the long screws 5 are fixed by nuts 6. The upper arc-shaped clamp 1 and the lower arc-shaped clamp 2 are fixed together by the long screws 5. In this embodiment, two long screws 5 are provided on each side to connect the upper arc-shaped clamp 1 and the lower arc-shaped clamp 2. In order to reinforce the connecting piece 3, preferably, a reinforcing rib 8 is provided on the connecting piece 3. In this embodiment, the reinforcing rib 8 is a rectangular plate perpendicular to the connecting piece 3. The reinforcing rib 8 is welded upward on the upper connecting piece 3, and the reinforcing rib 8 is welded downward on the lower connecting piece 3.

[0025] A plurality of rollers 7 are evenly mounted on the outer surface of the lower arc-shaped hoop 2, and the rollers 7 are preferably bearing-type rollers. The rollers 7 are symmetrically arranged along the arc direction of the outer surface of the lower arc-shaped hoop 2. In this embodiment, three rollers 7 are arranged, wherein the middle roller 7 is located at the bottom end of the lower arc-shaped hoop 2, and the rollers 7 on both sides are symmetrically arranged about the middle roller 7.

[0026] When the present invention is used, several devices of the present invention are installed on the thermal pipe 10 along the length direction of the thermal pipe 10. During installation, the upper arc clamp 1 and the lower arc clamp 2 are respectively placed on the upper surface and the lower surface of the thermal pipe 10, and the upper arc clamp 1 and the lower arc clamp 2 are fixed together by the long screw 5. The nut 6 is tightened to make the upper arc clamp 1 and the lower arc clamp 2 tightly clamp the thermal pipe 10, and then the pipe is jacked and dragged. When dragging the pipe in this embodiment, three rows of rollers 7 are provided below the thermal pipe 10 along the length direction of the thermal pipe 10. When dragging the pipe, the thermal pipe 10 does not directly contact the inner wall of the casing 9, and will not cause damage to the external insulation layer. It is not easy to rotate when dragging the pipe, which is safe and labor-saving.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A large-diameter pipe jacking and pulling trolley device, characterized in that: The invention comprises an upper arc-shaped clamp (1) and a lower arc-shaped clamp (2) which are symmetrically arranged. The upper arc-shaped clamp (1) and the lower arc-shaped clamp (2) are both provided with connecting plates (3) facing outward on the left and right sides. The connecting plates (3) are provided with connecting holes (4). A long screw (5) passes upward through the connecting holes (4). The long screw (5) is fixed by a nut (6). A plurality of rollers (7) are evenly installed on the outer surface of the lower arc-shaped clamp (2) along the arc direction.

2. The large-diameter pipe jacking and pulling trolley device according to claim 1 is characterized in that: The connecting piece (3) is provided with a reinforcing rib (8).

3. The large-diameter pipe jacking and pulling trolley device according to claim 1 is characterized in that: The number of the rollers (7) is three, with the middle roller (7) being located at the bottom end of the lower arc-shaped clamp (2).

4. The large-diameter pipe jacking and pulling trolley device according to claim 1 is characterized in that: The width of the upper arc-shaped clamp (1) and the lower arc-shaped clamp (2) is 10-20 cm.

5. The large-diameter pipe jacking and pulling trolley device according to claim 1 is characterized in that: The roller (7) is a bearing type roller.

6. The large-diameter pipe jacking and pulling trolley device according to claim 1 is characterized in that: Two long screws (5) are provided on each side.

7. The large-diameter pipe jacking and pulling trolley device according to claim 1 is characterized in that: Rubber cushion layers are provided on the inner surfaces of the upper arc-shaped clamp (1) and the lower arc-shaped clamp (2).

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